EXERCISE $3$ : PERMEABILITY IMPAIRMENT VERSUS DAMAGE PENETRATION

An initial well test in a reservoir gave a stabilized oil flow rate of $5780$ bopd for a stabilized flowing bottomhole pressure of $1524$ psi with a skin factor of zero. After $18$ months of production, the flowing bottomhole pressure was $1250$ to maintain the same initial production rate. Consider following data:

$\backslash$table$[[$Oil permeability, $k_o,120mD$